Question

if length is 30 cm and perimeter is 200 cm find its bredth

Answer 1

length = 30 cm
breadth = ?
perimeter = 200

perimeter =
$2 \times {l + b}$
200 = 2× (30 + x)
100 = 30 + x
x = 100 -30
× = 70

therefore the breadth is 70 cm.
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Answer 2

Hey!

Perimeter of rect=2 (l+b)

=)200=2 (30+b)

=)200=60+2b

=)b=140/2

=)b=70 cm

The breadth is 70 cm.

Hope it helps u.